Mainstream class group data is shown separately from standard/year-group enrolment data. The source does not identify which standard/year group each class group belongs to.
Average class size
24.33
2025/26
Mainstream classes
18
2025/26
Largest class group
30
2025/26
Classes with 30+ pupils
4
2025/26
Class group metrics trend
Class group metrics by year
Year
Mainstream class pupils
Mainstream classes
Average class size
Largest class
Classes 30+
2006/07
194
10
19.40
28
0
2007/08
223
11
20.27
29
0
2008/09
217
12
18.08
29
0
2009/10
230
12
19.17
30
1
2010/11
223
12
18.58
28
0
2011/12
299
11
27.18
35
5
2012/13
325
12
27.08
35
5
2013/14
342
12
28.50
34
5
2014/15
368
13
28.31
33
5
2015/16
384
14
27.43
33
3
2016/17
411
15
27.40
33
3
2017/18
423
16
26.44
32
4
2019/20
449
17
26.41
31
4
2020/21
445
17
26.18
31
2
2021/22
437
17
25.71
30
2
2022/23
439
18
24.39
29
0
2023/24
436
18
24.22
30
1
2024/25
440
18
24.44
30
5
2025/26
438
18
24.33
30
4
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2018/19: 424 in 2017/18 → 459, +35 pupils.
Biggest loss in a single year: 2010/11: 278 in 2009/10 → 265, -13 pupils.
Largest single-class increase: Junior Infants in 2022/23 (46 → 55, +9).
Largest single-class decrease: Junior Infants in 2023/24 (55 → 43, -12).
Largest cohort-step gain: JI → SI in 2022/23 (46 → 52, +6).
Largest cohort-step loss: 1st → 2nd in 2021/22 (58 → 55, -3).
Overall: 215 (1999/00) → 451 (2025/26), 236.
Summary statistics (class-level data)
Min / max / mean enrolment per class across the available final by-standard years.
Class
Min
Max
Mean
Years
Junior Infants
43
55
49.0
6
Senior Infants
45
59
53.8
6
1st Class
50
59
54.7
6
2nd Class
55
59
56.8
6
3rd Class
55
60
57.7
6
4th Class
51
60
57.3
6
5th Class
50
62
56.5
6
6th Class
51
63
56.7
6
Total
194
459
331.3
27
Total enrolment over time
Total and gender trends use historical records where available. Class-level data starts in 2020/21.
Enrolment by gender over time
Enrolment by class over time
Cohort progression
Track how each cohort (pupils who were in the same class in the same year) progresses through the school. Each step shows the count; the number between steps is the net change (pupils gained minus pupils lost).